Home / 15,907.49-21,958.23-13,660.34

Finding the Fourth Proportional to 15,907.49, 21,958.23 and 13,660.34

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Solution

The fourth proportional to 15,907.49, 21,958.23 and 13,660.34 is: 18,856.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,907.49 : 21,958.23 = 13,660.34 : x
  2. Step 2: Convert to fraction form
    15,907.49/21,958.23 = 13,660.34/x
  3. Step 3: Cross multiply
    15,907.49x = 21,958.23 × 13,660.34
  4. Step 4: Simplify right side
    15,907.49x = 299,956,887.60
  5. Step 5: Solve for x
    x = 299,956,887.60/15,907.49
  6. Step 6: Final answer
    x = 18,856.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.